Method for providing a virtual, noncontrast image dataset

An apparatus for providing a virtual, noncontrast image dataset of a patient, the apparatus comprising:

• a first interface configured to provide at least one multiphase computed tomography (CT) image dataset of the patient, the at least one multiphase CT image dataset comprising at least three CT image datasets that map an imaging area of the patient at three different points in time relative to an administration of contrast agent;
• a computing unit configured to form a minimum intensity image dataset of the imaging area based on the at least three CT image datasets, an image value of an image point of the minimum intensity image dataset is in each case based on a minimum value from among the image values of the image points, locally corresponding in the imaging area, in the at least three CT image datasets;
• and
• a second interface configured to output the virtual, noncontrast image dataset based on the minimum intensity image dataset.